For those unaware, in JavaScript, you can access a property using one
of two notations- the more common dot (.) notation, or the square
bracket notation ([]). The later while more obtuse, has the advantage of
enabling you to specify a property as a variable name (instead of
string). It comes in handy in this case where the CSS property we want
to look up is obviously dynamic. The "cssprop" parameter in
the above function should be the desired CSS property to look up in
camelCase convention (ie: "backgroundColor" instead of "background-color").

Lets go back to our familiar example again, this time, using our new
cross browser function to retrieve the cascaded CSS property values of the
element: